ngAfterViewInit() {
    this._renderer.setStyle(this._element.nativeElement.querySelector('.ion-bottom-drawer-scrollable-content .scroll-content'), 'touch-action', 'none');
    this._setDrawerState(this.state);

    const hammer = new Hammer(this._element.nativeElement);
    hammer.get('pan').set({ enable: true, direction: Hammer.DIRECTION_VERTICAL });
    hammer.on('pan panstart panend', (ev: any) => {
      if (this.disableDrag) return;

      switch (ev.type) {
        case 'panstart':
          this._handlePanStart();
          break;
        case 'panend':
          this._handlePanEnd(ev);
          break;
        default:
          this._handlePan(ev);
      }
    });
  }